Installation Instructions
Table Of Contents
- Table of contents
- Important document information
- Terms and abbreviations
- Registered trademarks
- Product life cycle
- Measuring principle
- Input
- Output
- Protocol-specific data, Modbus
- Electrical connection
- Performance characteristics
- Installation
- Environment
- Process
- Mechanical construction
- Operability
- Certificates and approvals
- Ordering information
- Accessories
- Documentation
Micropilot FMR20 Modbus RS485
Endress+Hauser 9
Modbus address Parameter name Description
5006 MODB_QV_VALUE Temperature (QV)
5008 MODB_SIGNALQUALITY Signal quality
5010 MODB_ACTUALDIAGNOSTICS Current diagnostics
number
5012 MODB_LOCATION_LONGITUDE Longitude coordinate
5014 MODB_LOCATION_LATITUDE Latitude coordinate
Electrical connection
Cable assignment
1
2
-
+
D0 / A (+)
D1 / B (-)
3
4
A0037750
2 FMR20 cable assignment, Modbus
1 Plus, brown wire
2 Minus, blue wire
3 Modbus D0/A (+), white wire
4 Modbus D1/B (-), black wire
Supply voltage
5 to 30 V
DC
An external power supply is necessary.
Battery operation
The sensor's Bluetooth® wireless technology communication can be disabled to increase the
operating life of the battery.
Potential equalization
No special measures for potential equalization are required.
Various power supply units can be ordered as an accessory from Endress+Hauser.
Power consumption
Data with supply voltage 24 V
DC
Maximum input power: 100 mW
Calculation for other supply voltage:
P = 39 mW + (Vcc -24 V
DC
) × 0.28
Measures to reduce power consumption:
Disabling the Bluetooth® wireless technology interface reduces the power consumption by 1.5 mW.